WO2001068036A2 - Compositions anti-uv pour la toilette personnelle qui se deposent et moussent bien - Google Patents

Compositions anti-uv pour la toilette personnelle qui se deposent et moussent bien Download PDF

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Publication number
WO2001068036A2
WO2001068036A2 PCT/EP2001/002223 EP0102223W WO0168036A2 WO 2001068036 A2 WO2001068036 A2 WO 2001068036A2 EP 0102223 W EP0102223 W EP 0102223W WO 0168036 A2 WO0168036 A2 WO 0168036A2
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WO
WIPO (PCT)
Prior art keywords
sunscreen
surfactant
anionic
composition according
spf
Prior art date
Application number
PCT/EP2001/002223
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English (en)
Other versions
WO2001068036A3 (fr
Inventor
Harry Clark Crookham
David John Lang
Mengtao He
Abid Nadim Khan-Lodhi
Original Assignee
Unilever Plc
Unilever Nv
Hindustan Lever Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Plc, Unilever Nv, Hindustan Lever Limited filed Critical Unilever Plc
Priority to AU2001254675A priority Critical patent/AU2001254675B9/en
Priority to EP01927711A priority patent/EP1261688B1/fr
Priority to DE60110562T priority patent/DE60110562T2/de
Priority to JP2001566503A priority patent/JP2003526643A/ja
Priority to AU5467501A priority patent/AU5467501A/xx
Priority to MXPA02008849A priority patent/MXPA02008849A/es
Priority to AT01927711T priority patent/ATE294851T1/de
Priority to BR0109113-1A priority patent/BR0109113A/pt
Publication of WO2001068036A2 publication Critical patent/WO2001068036A2/fr
Publication of WO2001068036A3 publication Critical patent/WO2001068036A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/35—Ketones, e.g. benzophenone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37—Esters of carboxylic acids
    • A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A61K8/442—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
    • A61K8/4946—Imidazoles or their condensed derivatives, e.g. benzimidazoles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86—Polyethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59—Mixtures
    • A61K2800/596—Mixtures of surface active compounds

Definitions

  • the invention relates to personal wash compositions which deposit high levels of sunscreen (SPF >2) while maintaining good lather (i.e., suffer minimal lather degradation over time relative to compositions with more "oily” sunscreens).
  • SPF >2 high levels of sunscreen
  • Enhanced deposition is found from both bar and liquid compositions and is based on the solubility or non-solubility of the sunscreen used.
  • sunscreens used are either water insoluble oils or insoluble fine solid particles (e.g., ZnO, T1O 2 ).
  • Such sunscreens are generally dispersed into dilute suspensions by surfactants present in the cleanser.
  • ⁇ t is believed that most of the sunscreen will remain suspended, the suspended sunscreen will be removed when skin is rinsed, and little will be left to deposit or the skin. Further, dispersions of the sunscreens into the wash liquid tends to defoam the liquor.
  • incorporation of oily sunscreen m bars also generally increases softness, stickiness and mush.
  • sunscreens which can be delivered and provide superior sun protection. These sunscreens can be deposited even in presence of aniomc surfactants. Unlike most sunscreens, these are much more soluble in water than the usual "oily" sunscreen and provide measurable sun protection even at low levels of addition (e.g., 0.1-15%, preferably 0.5 to 12%, more preferably 1.0 to 10% by wt . ) . Moreover, since they are more soluble in water, they do not defoam cleanser during wash process.
  • sunscreen agents which are organic molecules absorbing light in the UV range.
  • These sunscreens are water-soluble UV absorbers (greater than or equal to 0.1% preferably greater than 0.5% water solubility on a weight to weight basis at neutral pH) .
  • the sunscreens include a functional group that is aniomc or at least part of the sunscreen becomes aniomc (e.g., aniomc functional group incorporated at sufficiently high pH) at suitable pH (e.g., pH > 3, preferably greater than 4, preferably 4 to 10) and the sunscreens are water soluble or become soluble at suitable pH (again about 3 to 10) .
  • Such molecules include: phenylbenzimidazole sulphonic acid, aniomc salts of said acid which form at pH of 7 and above and mixtures thereof (forming at pH between 4 and 7); ferulic acid, its aniomc salts and mixtures thereof; benzophenone-4 , its aniomc salts and mixtures thereof; and benzophenone-9, its aniomc salts and mixtures thereof.
  • the sunscreen agents are used in the form of their salts generally at pH 7 and above.
  • these aniomc organic sunscreen molecules are believed to bind to positively charged sites on proteins within the skin thereby accounting for enhanced deposition. Because molecules deposited through binding from solution cover the surface uniformly, the UV protection is also believed to be more effective than protection obtained from oily or particulate sunscreens where the deposition may be localized to small areas of skin and leave some areas unprotected. Moreover, because the agents are more soluble in water than oily components, they cause less defoaming than the oily or particulate sunscreen agents. As noted above, oily, particulate sunscreens are believed to suspend in surfactants and more readily wash off when rinsed, thereby leading to lower deposition. Oily agents also lead to mushier bars. The specific sunscreen agents of the invention avoid these problems.
  • WO 14053 to Cussons Int. Ltd. teaches personal wash compositions containing sunscreen agents including phenylbenzimidazole sulphomc acid (which is recited among a list of sunscreen agents which may be used (page 7) .
  • the reference does not recognize that the sulphomc acid sunscreen agent or salts thereof provide superior sun protection relative to other sunscreens including even those used in the reference itself (see Examples 1-3 of reference) .
  • the higher water solubility also makes the sunscreens less defoaming and more soluble for personal wash products where foaming is considered a desirable attribute.
  • U.S. Patent Nos. 4,933,174 and U.S. 4,701,321 by J. Bernstein teaches a liquid PW composition, which comprises nomonic and amphote ⁇ c surfactants, and sunscreen materials including ammobenzoic acid, the esters of an aminobenzoic acid, homosalate, 2-hydroxy-4-methoxylbenzophenone (oxybenzone) or 2-ethoxyethyl p-methoxycinnamate (cmoxate) .
  • Nomomc and amphote ⁇ c surfactants instead of aniomc surfactants are used to enhance the deposition of sunscreen agents.
  • water compared to more soluble "salts" of subject invention they provide enhanced sun protection factor or SPF (e.g. SPF greater than 2, to about 25, preferably greater than 3 to 20, more preferably from about 4 to 15); and the sunscreen does not depress foaming (e.g., foaming does not depress over time compared with more oily components whose lather does depress more quickly over time) .
  • SPF sun protection factor
  • the sunscreen does not depress foaming (e.g., foaming does not depress over time compared with more oily components whose lather does depress more quickly over time) .
  • foaming does not depress more than about 50%, preferably more than 30%, preferably more than about 25% over 30 minutes time using test as defined in examples.
  • the present invention provides a personal wash composition, particularly personal wash compositions which may be in bar or liquid form.
  • the compositions are bars comprising:
  • first aniomc surfactant which may be fatty acid soap or a synthetic aniomc
  • second surfactant selected from the group consisting of second aniomc surfactant (different from first), nomomc, amphote ⁇ c, catiomc and mixture thereof
  • free fatty acid e.g., polyalkylene glycol, EO-PO copolymers
  • water soluble structurant e.g., polyalkylene glycol, EO-PO copolymers
  • alkanoate e.g., glycerol monostearate having chain length of C12
  • sunscreen agent e.g., functional group attached to sunscreen agent which, in solution, yields negative charge such as, for example, sulfates, sulfonates, carboxylates, phosphates, phosphonates, etc.
  • sunscreen agent by which is meant overall equilibrium of the acid form of the sunscreen, its salt and mixtures
  • sunscreen agent has a water solubility of greater than or equal to 0.1%, preferably greater than 0.5% on weight to weight basis as measured at pH 7; wherein said sunscreen has SPF of greater than 2 to 25; and wherein composition does not degrade more than 50% lather, preferably no more than 35%, more preferably no more than 25% over 30 minutes as defined in examples.
  • 5ars generally will have 1-15%, preferably 2-12% water.
  • composition may be liquid composition comprising:
  • the present invention is based on applicants unexpected finding that certain sunscreen agents and/or salts thereof are amomc, water-soluble compounds which provide enhanced SPF while simultaneously not depressing foam relative to more oily, less water soluble sunscreen compounds (e.g., those which are generally less soluble and have solubility of less than 0.5% wt . for wt . water) .
  • These "more" water- soluble sunscreen agents and/or amomc salts tnereof counterions may exist to amomc group as well) provide unexpectedly enhanced effect whether used in bar or liquid cleanser compositions.
  • the invention comprises bar compositions comprising:
  • a second surfactart selected from the group consisting of a second amomc (differing from the first), nonionic surfactant, amphoteric/zwitterionic surfactant, cationic surfactant and mixtures thereof;
  • sunscreen agent and/or salt thereof providing anionic charge
  • sunscreen and/or salt thereof has SPF greater than 2 to 25, preferably greater than 3 to 20, more preferably greater than about 4 to 15
  • sunscreen agent and/or salt has solubility of greater than or equal to 0.1%, preferably greater than 0.5% on weight to weight basis as measured neutral pH
  • sunscreen agent and/or salt has lather which does not substantially degrade over time relative to more oily components.
  • compositions may be liquid cleanser comprising:
  • second surfactant selected from the group consisting of anionic different from first, nonionic, amphoteric/zwitterionic, cationic and mixtures thereof; (3) 0.1 to 10% of sunscreen and/or salt thereof as defined with bar compositions thereof; and
  • compositions has SPF values, solubility and lather parameters as defined for bar compositions above .
  • the first aniomc surfactant may be a synthetic surfactant or fatty acid soap.
  • the bar compositions may comprise a "pure" soap composition. Such bars are generally not mild (although they do foam well and have sensory properties preferred by some consumers) and so it is generally preferred to use bars which are predominantly synthetic or which are combinations of synthetic and soap.
  • soap is used here in its popular sense, i.e., the alkali metal or alkanol ammonium salts of aliphatic alkane- or alkene monocarboxylic acids.
  • Sodium, potassium, mono-, di and tri-ethanol ammonium cations, or combinations thereof, are suitable for purposes of this invention.
  • sodium soaps are used m the compositions of this invention, but from about 1% to aoout 25% of the soap may be potassium soaps.
  • the soaps useful herein are the well known alkali metal salts of natural or synthetic aliphatic (alkanoic or alkanoic) acids having about 12 to 22 carbon atoms, preferably about 12 to about 18 carbon atoms. They may be described as alkali metal carboxylates of acrylic hydrocarbons having about 12 to about 22 carboj atoms.
  • Soaps having the fatty acid distribution of coconut oil may provide the lower end of the broad molecular weight range.
  • Those soaps having the fatty acid distribution of peanut or rapeseed oil, or their hydrogenated derivatives may provide the upper end of the broad molecular weight range .
  • soaps having the fatty acid distribution of coconut oil or tallow, or mixtures thereof since these are among the more readily available fats.
  • the proportion of fatty acids having at least 12 carbon atoms in coconut oil soap is about 85%. The proportion will be greater when mixtures of coconut oil and fats such as tallow, palm oil or non-tropical nut oils or fats are used, wherein the principle chain lengths are C ⁇ 6 and higher.
  • Preferred soap for use in the compositions of this invention has at least about 85% fatty acids having about 12-18 carbon atoms .
  • Coconut oil employed for the soap may be substituted in whole or in part by other "high-lau ⁇ c” oils, that is, oils or fats wherein at least 50% of the total fatty acids are composed of lauric or myristic acids and mixtures thereof.
  • These oils are general exemplified by the tropical nut oils of the coconut oil class. For instance, they include: palm kernel oil, babassu oil, ou ⁇ curi oil, tucum oil, cohune nut oil, muru-muru oil, aboty kernel oil, khakan kernel oil, dika nut oil, and ucuhuba butter.
  • a preferred soap is a mixture of about 15% to about 20% coconut oil and about 80% to about 85% tallow. These mixtures contain about 95% fatty acids having about 12 to about 18 carbon atoms.
  • the soap may be prepared from coconut oil m which case the fatty acid content is about
  • the soaps may contain unsaturation m accordance with commercially acceptable standards. Excessive unsaturation is normally avoided.
  • Soaps may be made by the classic kettle boiling process or modern continuous soap manufacturing processes wherein natural fats and oils such as tallow or coconut oil or their equivalents are saponified with an alkali metal hydroxide using procedures well known to those skilled in the art.
  • the soaps may be made by neutralizing fatty acids, such as lauric (C ⁇ 2 ), my ⁇ stic (C ⁇ 4 ), palmitic (C ⁇ 6 ) or staric (Cxs) acids with an alkali metal hydroxide or carbonate .
  • the first amomc detergent active which may be used may be aliphatic sulfonates, such as a primary alkane (e.g.,
  • the first anionic may also be an alkyl sulfate (e.g.,
  • alkyl ether sulfate including alkyl glycerol ether sulfates.
  • alkyl ether sulfates are those having the formula:
  • R is an alkyl or alkenyl having 8 to 18 carbons, preferably 12 to 18 carbons; n has an average value of greater than 1.0, preferably greater than 3: and M is a solubilizing cation such as sodium, potassium ammonium or substituted ammonium. Ammonium and sodium lauryl ether sulfates are preferred.
  • the anionic may also be alkyl sulfosuccinates
  • alkyl and acyl taurates including mono- and dialkyl, e.g., C 6 -C 22 sulfosuccinates
  • alkyl and acyl taurates including mono- and dialkyl, e.g., C 6 -C 22 sulfosuccinates
  • alkyl and acyl taurates including mono- and dialkyl, e.g., C 6 -C 22 sulfosuccinates
  • alkyl and acyl taurates including alkyl and acyl taurates, alkyl and acyl sarcosinates, sulfoacetates, C 8 -C 22 alkyl phosphates and phosphates, alkyl phosphate esters and alkoxyl alkyl phosphate esters, acyl lactates, C 8 -C 22 monoalkyl succinates and maleates, sulphoacetates, alkyl glycosides and acyl ise
  • Sulfosuccinates may be monoalkyl sulfosuccinates having the formula:
  • R ranges from C 8 -C 22 alkyl and M is a solubilizing cation.
  • RCON (CH 3 ) CH 2 CO 2 M wherein R ranges from C 8 -C 20 alkyl and M is a solubilizing cation.
  • Taurates are generally identified by formula:
  • R ranges from C 8 -C 20 alkyl, R ranges from O ⁇ -
  • C 4 alkyl and M is a solubilizing cation.
  • esters are prepared by reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 18 carbon atoms and an iodine value of less than 20. At least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.
  • Acyl lsethionates when present, will generally range from about 10% to about 70% by weight of the total composition. Preferably, this component is present from about 30% to about 60%.
  • the acyl isethionate may be an alkoxylated isethionate such as s described in Ilardi et al., U.S. Serial No. 796,748, hereby incorporated by reference. This compound has the general formula:
  • R is an alkyl group having 8 to 18 carbons
  • m is an integer from 1 to 4
  • X and Y are hydrogen or an alkyl group having 1 to 4 carbons
  • M is a monovelent cation such as, for example, sodium, potassium or ammonium.
  • amomc component will comprise from about 10 to 70% of the composition, preferably 20-50% by wt of the composition.
  • the second surfactant may be any of the anionics defined above except that it differs from the first amomc,
  • the second component may also be any of the amphote ⁇ c or nomomcs discussed below as well as a mixture of the amomc, amphoteric and/or nomomc.
  • Amphoteric detergents w ⁇ ich may be used in this invention include at least o ⁇ e acid group. This may be a carboxylic or a sulphomc ac d group. They include quaternary nitrogen and therefore are quaternary amido acids. They should generally include an alkyl or alkenyl group of 7 to 18 carbon atoms. They will usually comply with an overall structural formula:
  • R is alkyl or alkenyl of 7 to 18 carbon atoms:
  • R 2 and R3 are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms;
  • m is 2 to 4 ;
  • n is 0 to 1
  • X is alkylene of to 3 carbon atoms optionally substituted with hydroxyl
  • Y is —C0 2 — or —SO 3 —
  • Suitable amphoteric detergents within the above general formula include simple betaines of formula:
  • R may in particular be a mixture of C ⁇ 2 and C ⁇ 4 alkyl groups derived from coconut so that at least half, preferably at least three quarters of the groups R have 10
  • R and R are preferably methyl.
  • amphoteric detergent is a sulphobetaine of formula:
  • the nomomc which may be used as the second component of the invention include in particular the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nomomc detergent compounds are alkyl (Cg-C 22 ) phenols- ethylene oxide condensates, the condensation products of aliphatic (C 8 -C ⁇ s) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamme .
  • Other so-called nomomc detergent compounds include long chain tertiary amme oxides, long chain tertiary phosphme oxides and dialkyl sulphoxides.
  • the nomomc may also be a sugar amide, such as a polysaccharide amide.
  • the surfactant may be one of the lactobionamides described in U.S. Serial No. 816,419 to Au et al. which is hereby incorporated by reference or it may be one of the sugar amides described m U.S. Patent No. 5,009,814 to Kelkenberg, nereby incorporate ⁇ into the subject application by reference.
  • Other surfactants which may be used are described in U.S. Patent No. 3,723,325 to Parran Jr., which is also incorporated into the subject application by reference.
  • the second component i.e., second aniomc nomomc and/or amphoteric compound or mixture
  • the second component is incorporated into the composition as less than 20% by weight, preferably 1 to 15% by weight of the composition.
  • bars of the invention may comprise 0 to 75% structurant (e.g., free fatty acid, water soluble structurant, glycerol monoalkanoate noted below) .
  • structurant e.g., free fatty acid, water soluble structurant, glycerol monoalkanoate noted below
  • the bar will contain 5% to 65% structurant though none is required.
  • Free fatty acids of 8-22 carbon atoms may also be desirably incorporated within the compositions of the present invention. Some of these fatty acids are present to operate as superfattmg agents and others as skin feel and creammess enhancers.
  • Superfattmg agents enhance lathering properties and may be selected from fatty acids of carbon atoms numbering 8-18, preferably 10-16, generally in an amount up to 15% by weight (although higher amounts may be use ⁇ ) of the composition.
  • Skm feel and creammess enhancers the most important of which is stearic ac d, are also desirably present these compositions. Water Soluble Structurant
  • Another compound which may be used in the bar is water soluble structurant (e.g., polyalkylene glycol).
  • water soluble structurant e.g., polyalkylene glycol
  • This component should comprise 0% by wt . to 60%, preferably greater than 5% to 40% by wt . of the bar composition.
  • the structurant e.g., polyalkylene glycol
  • the structurant has a melting point of 40°C to 100°C, preferably 45°C to 100°C, more preferably 50°C to 90°C.
  • water soluble structurant (b) Materials which are envisaged as the water soluble structurant (b) are moderately high molecular weight polyalkylene oxides of appropriate melting point and in particular polyethylene glycols or mixtures thereof.
  • Polyethylene glycols which may be used may have a molecular weight in the range 1,500-20,000.
  • Carbide's Carbowax® PEG 8,000 represents a distribution of molecular weights.
  • PEG 8,000 for example, has an average MW range of 7,000-9,000
  • PEG 300 has an average MW range from 285 to 315.
  • the average MW of the product can be anywhere between the low and high value, and there may still be a good portion of the material with MW below the low value and above the high value.
  • polyalkylene glycol e.g., polyethylene glycol
  • a molecular weight in the range from 50,000 to 50,000, especially molecular weights of around 100,000.
  • polyethylene glycols have been found to improve the wear rate of the bars. It is believed that this is because their long polymer chains remain entangled even when the bar composition is wetted during use.
  • the quantity is preferably from 1% to 5%, more preferably from 1% or 1.5% to 4% or 4.5% by weight of the composition.
  • these materials will generally be used jointly with a larger quantity of other water soluble structurant (b) such as the above mentioned polyethylene glycol of molecular weight 1,500 to 10,000.
  • polyethylene oxide polypropylene oxide block copolymers melt at temperatures in the required range of 40°C to 100°C, and may be used as part or all of the water soluble structurant (b) .
  • Preferred ere are block copolymers in which polyethylene oxide provides at least 40% by weight of the block copolymer. Such block copolymers may be used in mixtures with polyethylene glycol or other polyethylene glycol water soluble structurant.
  • glycerol monoalkanoate wherein alkanoate group may be C 2 ⁇ C 2 alkyl (e.g., glycerol monostearate) . This may comprise 0- 60% by wt . of bar, preferably 5% to 50% by wt .
  • Sunscreen glycerol monoalkanoate wherein alkanoate group may be C 2 ⁇ C 2 alkyl (e.g., glycerol monostearate) . This may comprise 0- 60% by wt . of bar, preferably 5% to 50% by wt .
  • the sunscreens of the invention are defined by the fact that they are sunscreens which form salts (at sufficient pH) so that the salts or an equilibrium of salt and the acid form of the sunscreen have a solubility of greater than 0.1% wt/wt., preferably greater than 0.5% as measured at neutral pH .
  • the pH of the composition has to be high enough to have at least some portion of the amomc salt.
  • aniomc salts are formed by functional amomc groups well known to those skilled in the art such as sulphates, sulfonates, carboxylates, phosphates, phosphonates and other groups which are well known to provide amomc charges solution.
  • sunscreen compounds examples include phenylbenzimidazole sulphomc acid and salts thereof; ferulic acid and salts thereof; benzophenone and its salts thereof. Other examples include variants of benzophenone and salts thereof.
  • Skm mildness improvers also preferably used in the composition of the invention are salts of isethionate.
  • Effective salts cations may be selected from the group consisting of alkali metal, alkaline earth metal, ammonium, alkyl ammonium and mono-, di or tri-alkanolammomum ions.
  • Specifically preferred cations include sodium potassium, lithium, calcium, magnesium, ammonium, triethylammonium, monoethanolammomum, diethanolammomum or triethanolammomum
  • a mildness improver is simple unsubstituted sodium isethionate.
  • the skm mildness improver will be present from about 0.5% to about 50%.
  • the mildness improver is present from about 1% to about 25%, more preferably from about 2% to about 15, optimally from 3% to 10% by weight of the total composition.
  • compositions may be needed with these compositions.
  • the amount of these chemicals and adjuncts may range from about 1% to about 40% by weight of the total composition.
  • a suds-busing detergent salt may be incorporated.
  • Illustrative of this type additive are salts selected from the group consisting of alkali metal and organic amine higher aliphatic fatty alcohol sulfates, alkyl aryl sulfonates and the higher aliphatic fatty acid taurinates.
  • Adjunct materials including germicides, perfumes, colorants, pigments such as titanium dioxide and water may also be present.
  • the bar compositions of the invention have SPF of greater than 2 to 25, preferably greater than about 3 to 20 and more preferably greater than about 4 to 15.
  • SPF is defined as per the protocol in the example section.
  • compositions have lather of which does not degrade more than 50%, preferably more than 35%, preferably more than 25% over 30 minute period.
  • compositions of the invention may also be liquid compositions as noted above
  • the first amomc surfactant may be any of the surfactants as for the bars above except that it will not be "soap" as defined therein.
  • the second surfactant may also be one of the above as defined for bars.
  • the liquids of this invention may be isotropic single phase liquids or they may be structured as defined and using structurants as defined in U.S. Patent No. 5,952,286 to Puvvada et al. hereby incorporated by reference into the subject invention.
  • compositions may contain oils or emollients as noted below.
  • Vegetable oils Arachis oil, castor oil, cocoa butter, coconut oil, corn oil, cotton seed oil, olive oil, palm kernel oil, rapeseed oil, safflower seed oil, sesame seed oil and soybean oil.
  • Esters Butyl myristate, cetyl palmitate, decyloleate, glyceryl laurate, glyceryl ricmoleate, glyceryl stearate, glyceryl isostearate, hexyl laurate, isobutyl palmitate, isocetyl stearate, isopropyl isostearate, isopropyl laurate, isopropyl lmoleate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, propylene glycol monolaurate, propylene glycol ricmoleate, propylene glycol stearate, and propylene glycol isostearate.
  • Fatty acids and alcohols Behemc acid, palmitic acid, stearic acid, behenyl alcohol, cetyl alcohol, eicosanyl alcohol and isocetyl alcohol.
  • oil/emollients include mineral oil, petrolatum, silicone oil such as dimethyl polysiloxane, lauryl and myristyl lactate.
  • the emollient may also function as a structurant, it should not be doubly included such that, for example, if the structurant is 15% oleyl alcohol, no more than 5% oleyl alcohol as "emollient” would be added since the emollient (whether functioning as emollient or structurant) never comprises more than 20%, preferably no more than 15% of the composition.
  • the emollient/oil is generally used in an amount from about 1 to 20%, preferably 1 to 15% by wt . of the composition. Generally, it should comprise no more than 20% of the composition.
  • compositions of the invention may include optional ingredients as follows:
  • Organic solvents such as ethanol
  • auxiliary thickeners such as carboxymethylcellulose, magnesium aluminum silicate, hydroxyethylcellulose, methylcellulose,
  • R carbopols, glucamides, or Antil from Rhone Poulenc; perfumes; sequestering agents, such as tetrasodium ethylenediammetetraacetate (EDTA) , EHDP or mixtures m an amount of 0.01 to 1%, preferably 0.01 to 0.05%; and coloring agents, opacifiers and pearlizers such as zinc stearate, magnesium stearate, T ⁇ 0 2 , EGMS (ethylene glycol monostearate) or Lytron 621 (Styrene/Acrylate copolymer); all of which are useful in enhancing the appearance or cosmetic properties of the product.
  • EDTA tetrasodium ethylenediammetetraacetate
  • EHDP ethylenediammetetraacetate
  • coloring agents, opacifiers and pearlizers such as zinc stearate, magnesium stearate, T ⁇ 0 2 , EGMS (ethylene glycol monostearate) or Lytron 621 (
  • compositions may further comprise antimicrobials such as 2-hydroxy-4, 2 ' 4 ' trichlorodiphenylether (DP300); preservatives such as dimethyloldimethylhydantoin (Glydant XL1000), parabens, sorbic acid etc.
  • antimicrobials such as 2-hydroxy-4, 2 ' 4 ' trichlorodiphenylether (DP300); preservatives such as dimethyloldimethylhydantoin (Glydant XL1000), parabens, sorbic acid etc.
  • compositions may also comprise coconut acyl mono- or diethanol amides as suds boosters, and strongly ionizing salts such as sodium chloride and sodium sulfate may also be used to advantage.
  • Antioxidants such as, for example, butylated hydroxytoluene (BHT) may be used advantageously in amounts of about 0.01% or higher if appropriate.
  • BHT butylated hydroxytoluene
  • Cationic conditioners which may be used include
  • Polyethylene glycols which may be used include:
  • Thickeners which may be used include Amerchol Polymer HM 1500 (Nonoxynyl Hydroethyl Cellulose) ; Glucam DOE 120
  • TEG 120 Methyl Glucose Dioleate TEG 120 Methyl Glucose Dioleate
  • Rewoderm (R) PEG modified glyceryl cocoate, palmate or tallowate) from Rewo Chemicals from Rewo Chemicals
  • Antil ( ) 141 from Goldschmidt '
  • Another optional ingredient which may be added are the defloculatmg polymers such as are taught in U.S. Patent No. 5,147,576 to Montague, hereby incorporated by reference.
  • exfoliants such as polyoxyethylene beads, walnut sheets and apricot seeds .
  • the liquid compositions like the bar compositions will have SPF values and lather volume as defined for the bars.
  • This method involves the measurement of the transmission of light across the UV spectrum through a treated substrate. From the transmittance data an estimate of SPF can be obtained.
  • In-vitro SPF measurements were made on an Optometrics SPF 290 instrument (Optometrics Corp., Ayre MA, USA). The instrument measures diffuse transmittance through a treated substrate at 5 nm increments covering wavelengths from 290 to 400 nm and reports a calculated SPF. Measurements were taken at 6 sites over a 6.5 cm by 6.5 cm piece of each treated substrate.
  • the substrate used was Vitro-skinTM (IMS Testing Group, Milford, CT, USA) .
  • the Vitro-Skin substrate was pre-hydrated in a desiccator at 80% relative humidity as recommended by the supplier.
  • the vitro-skin substrate was treated by rubbing a wet bar across it 10 times then rubbing the Vitro-skin substrate for 15 seconds. After this the substrate was rinsed under tap water for 15 seconds and blotted dry with a paper towel.
  • Lather was measured using stoppered, graduated 100 ml cylinders. The cylinders were shaken 10 seconds and foam height observed.
  • Table 1 represents formulae containing anionic (water-soluble) UV sunscreens and Table 2 represents formulae containing hydrophobic UV absorbers
  • SPF water soluble or mixture of at least one water soluble anionic sunscreen and non-water soluble sunscreen was used
  • SPF was significantly higher (e.g., 4.7 SPF, 4.9 SPF, 5.5 SPF, 5.2 SPF) compared to when non-water soluble sunscreen was used (e.g., 1.1 SPF, 1 SPF, 1SPF) .
  • liquid formulations were prepared using various anionic surfactant systems and 2-phenyl benzimidazole sulfonic acid as noted below.
  • the Soap Screen® product contains known "oily” sunscreens, e.g., octyl methoxycinnamate, octyl salicylate and oxybenzone .
  • Stoppered 100 ml graduated cylinders were prepared.
  • One cylinder (cylinder A) contained 10 ml of 1% sodium lauryl ether sulfate and 1% 2-phenylbenzimidazole-5-sulfonic acid neutralized with a stoichiometric amount of sodium hydroxide and the other (cylinder B) contained 10 ml of 1% sodium lauryl ether sulfate and 1% ethyl hexyl paramethoxy cinnamate.
  • the cylinders were shaken for 10 seconds, then the foam height was observed.
  • both cylinders contained the same volume of foam (approximately 70 ml) but the foam in cylinder B decayed more rapidly than the foam in cylinder A.

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  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

L'invention concerne des compositions pour la toilette personnelle qui déposent de grandes quantités d'écran anti-UV tout en moussant bien. On obtient un dépôt amélioré, à partir d'une composition en barre ou en liquide, grâce à l'utilisation d'écrans anti-UV spécifiques, en particulier en ce qui concerne leur solubilité.
PCT/EP2001/002223 2000-03-10 2001-02-27 Compositions anti-uv pour la toilette personnelle qui se deposent et moussent bien WO2001068036A2 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AU2001254675A AU2001254675B9 (en) 2000-03-10 2001-02-27 Personal wash sunscreen compositions which deposit and lather well
EP01927711A EP1261688B1 (fr) 2000-03-10 2001-02-27 Compositions anti-uv pour la toilette personnelle qui se deposent et moussent bien
DE60110562T DE60110562T2 (de) 2000-03-10 2001-02-27 Körperpflegemittel mit gutem schaum- und haftungsvermögen enthaltend sonnenschutzmittel
JP2001566503A JP2003526643A (ja) 2000-03-10 2001-02-27 沈着して良好に泡立つボディ洗浄遮光剤組成物
AU5467501A AU5467501A (en) 2000-03-10 2001-02-27 Personal wash sunscreen compositions which deposit and lather well
MXPA02008849A MXPA02008849A (es) 2000-03-10 2001-02-27 Composiciones de bloqueador solar de lavado personal las cuales se depositan y hacen espuma bien.
AT01927711T ATE294851T1 (de) 2000-03-10 2001-02-27 Körperpflegemittel mit gutem schaum- und haftungsvermögen enthaltend sonnenschutzmittel
BR0109113-1A BR0109113A (pt) 2000-03-10 2001-02-27 Composições em barra e lìquida, para lavagem pessoal

Applications Claiming Priority (2)

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US09/523,248 2000-03-10
US09/523,248 US6576228B1 (en) 2000-03-10 2000-03-10 Personal wash sunscreen compositions which deposit and lather well

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WO2001068036A2 true WO2001068036A2 (fr) 2001-09-20
WO2001068036A3 WO2001068036A3 (fr) 2002-07-04

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EP (1) EP1261688B1 (fr)
JP (1) JP2003526643A (fr)
CN (1) CN1230516C (fr)
AT (1) ATE294851T1 (fr)
AU (2) AU5467501A (fr)
BR (1) BR0109113A (fr)
DE (1) DE60110562T2 (fr)
MX (1) MXPA02008849A (fr)
WO (1) WO2001068036A2 (fr)
ZA (1) ZA200207026B (fr)

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WO2021245018A1 (fr) * 2020-06-02 2021-12-09 Unilever Ip Holdings B.V. Composition de nettoyage de la peau à base de fps élevé
WO2021245082A1 (fr) * 2020-06-02 2021-12-09 Unilever Ip Holdings B.V. Composition de nettoyage de protection contre les uv élevée

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WO2015189630A1 (fr) * 2014-06-12 2015-12-17 Cosmetic Warriors Limited Composition
AU2015273226B2 (en) * 2014-06-12 2019-12-19 Cosmetic Warriors Limited Composition
WO2021245018A1 (fr) * 2020-06-02 2021-12-09 Unilever Ip Holdings B.V. Composition de nettoyage de la peau à base de fps élevé
WO2021245082A1 (fr) * 2020-06-02 2021-12-09 Unilever Ip Holdings B.V. Composition de nettoyage de protection contre les uv élevée
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ATE294851T1 (de) 2005-05-15
DE60110562T2 (de) 2005-11-10
MXPA02008849A (es) 2003-02-10
WO2001068036A3 (fr) 2002-07-04
AU5467501A (en) 2001-09-24
AU2001254675B9 (en) 2005-01-06
CN1437649A (zh) 2003-08-20
JP2003526643A (ja) 2003-09-09
ZA200207026B (en) 2003-09-02
EP1261688A2 (fr) 2002-12-04
EP1261688B1 (fr) 2005-05-04
AU2001254675B2 (en) 2004-11-04
US6576228B1 (en) 2003-06-10
BR0109113A (pt) 2003-06-03
DE60110562D1 (de) 2005-06-09
CN1230516C (zh) 2005-12-07

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